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Re: [Tsv-art] game over, EH [Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06]

Gert Doering <gert@space.net> Thu, 06 December 2018 09:32 UTC

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Date: Thu, 06 Dec 2018 10:31:54 +0100
From: Gert Doering <gert@space.net>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: Gert Doering <gert@space.net>, Christopher Morrow <morrowc.lists@gmail.com>, heard@pobox.com, tsv-art@ietf.org, opsec wg mailing list <opsec@ietf.org>, ietf <ietf@ietf.org>, draft-ietf-opsec-ipv6-eh-filtering.all@ietf.org
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Subject: Re: [Tsv-art] game over, EH [Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06]
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Hi,

On Thu, Dec 06, 2018 at 01:14:54PM +1300, Brian E Carpenter wrote:
> > Which implies that as soon as the evil guys out there find a way to
> > generate DDoS streams carrying EHs that our border routers will (have to)
> > apply very strict rate limiting to everything they do not understand.
> > 
> >  - pass TCP
> >  - rate-limit UDP on well-known reflective attacks port
> >  - pass rest of UDP
> >  - rate-limit ICMP
> >  - rate-limit fragments
> >  - rate-limit all the rest to something which can never exceed a customer's
> >    access-link
> > 
> > game over, EH
> 
> Just to point out that this is equivalent to saying "game over,
> any new layer 4 protocol" too. For example, you just killed SCTP.
> And the same goes for new protocols over IPv4.

Well.  Since nobody is using SCTP, it can nicely live in the 
"rate-limit all the rest to something ..." bucket...

But yes, "any new layer 4 protocol" is likely to not work in an Internet
that is basically full of hostile packets *in high volumes*.

Trying to run large volume traffic over UDP/443 is going to be the next
excercise in "operators told you that is isn't going to work"...

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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